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试卷是一面镜子,它反映了人类生产、生活的方方面面,一类与人类生存攸关的环保问题自然出现在数学试卷上,怎样用数学方法去解决呢?请看下面题目.
The examination paper is a mirror, it reflects all aspects of human production and life, and a class of environmental protection issues that are closely related to human existence naturally appear in mathematics test papers. How to use mathematical methods to solve it? Look at the following topics.